What is CVE-2017-9305?

CVE-2017-9305 is a medium-severity vulnerability in Tiki Tikiwiki Cms\/groupware, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2017-05-31.

How severe is CVE-2017-9305?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Tiki Tikiwiki Cms\/groupware

CVE-2017-9305

lib/core/TikiFilter/PreventXss.php in Tiki Wiki CMS Groupware 16.2 allows remote attackers to bypass the XSS filter via padded zero characters, as demonstrated by an attack on tiki-batch_send_newsletter.php.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2017-05-31 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.010 (59.9th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 59.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

Tiki Tikiwiki Cms\/groupware — versions 16.2

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/tikiorg/tiki/commit/6c016e8f066d2f404b18eaa1af7fa0c7a9651ccd (Patch, Vendor Advisory)
www.cdxy.me/ (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2017-9305?: CVE-2017-9305 is a medium-severity vulnerability in Tiki Tikiwiki Cms\/groupware, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2017-05-31.
How severe is CVE-2017-9305?: Medium severity. CVSS v3 base score is 6.1 out of 10.